TA Triumph-Adler DC 2435 - Manual (Page 60)

FAX Operation (Basic)
3-20
When deleting the destination of a contact
registration or group
Press [Delete]. Press [Yes] in the confirmation
screen to delete the destination or group.
6 Press [Register]. When the change confirmation
screen appears, press [Yes]. Changes or deletions
made to the registered details are applied in the
Address Book.